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二尖瓣舒张早期血流与二尖瓣环舒张早期运动速度之比评价心脏舒张功能的研究 被引量:2

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摘要 目的:研究二尖瓣舒张早期血流(E)与二尖瓣环舒张早期运动速度(Em)之比(E/Em)评价正常人心脏舒张功能的影响因素和异常值的界定。方法:100例健康人群按年龄分成<50岁,50~59岁,60~69岁及≥70岁4组,测量二尖瓣血流速度舒张早期E峰值、舒张晚期A峰值、二尖瓣外环组织运动速度舒张早期Em峰值、舒张晚期Am峰值,计算E/A比值、Em/Am比值及E/Em比值。比较年龄、性别、心率、体重指数(BMl)、二维超声结构参数和左室射血分数(LVEF)对E/Em的影响,界定E/Em的异常取值。结果:1.年龄对E/Em有影响(D=0.449,P=0.000),E/Em随着年龄的增长升高。2.50岁以上正常人中使用E/Em评估左室舒张功能时应考虑年龄因素,E/Em值应至少大于10。结论:E/Em评估左室舒张功能时应考虑年龄因素。
作者 秦川 王勇
出处 《新疆医学》 2010年第12期1-4,共4页 Xinjiang Medical Journal
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